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Did you know?

Sound travels through water 3 times faster than through air.

Picture Of The Day

"Have you ever watched a lightning storm in awe? Join the crowd. Oddly, nobody knows exactly how lightning is produced. What is known is that charges slowly separate in some clouds causing rapid electrical discharges (lightning), but how electrical charges get separated in clouds remains a topic of much research." - NASA. Photo: Chris Kotsiopoulos.